Mining-machine



(No Model.)

M. LALLY.

MINING MACHINE. No. 269,214. Patented Dec. 19, 1882.

it?" s WITNESSES: INVENTOR.

ATTORNEYS.

UNITED STATES PATENT @FFIQE.

MICHAEL LALLY, OF NORTH-LAVVRENGE, OHIO.

MINING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 269,214, dated December 19, 1882.

Application filed April 29, 1882. (X0 model.)

To all whom it may concern:

Be it known that I, MICHAEL LALLY, of North Lawrence, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Drilling-Machines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, let'crence being had to the accompanying drawings, which form a part of this specification.

This invention relates to machines for drilling or boring coal, rock, slate, clay, &c.; and it has for its object to lessen the labor in drilling, and at the same time provide a simple, durable, comparatively inexpensive, and efticient machine; To this enditcousists in certain improvements in the construction and operation of the same.

In the drawings, Figure 1 is a perspective view; Fig. 2, a side view; Fig.3, averticaltransverse section of the extensible frame; Fig. 4, a detailed perspective view of the drill and its box or hearing detached; and Fig. 5, a cross: section of the latter.

Referring by letter to the drawings, A designates the extensible frame or support of my improved drilling-imichine, consisting of two parts, B O, the former, B, having a top casting or cross-piece, D, in the ends of which are fitted the downwardly extending vertical side pieces, E E, which havecollars F, secured at their lower ends, embracing and sliding on the outer perpendicular side pieces, G G, secured at their lower ends to a casting or crosspiece, H. The sides G G are connected at their top ends by a band or collar, I, and are provided with perforations J, through which passes a transverse adjusting pin or bolt, K, inserted also through a pair of the transverse perforations L of a series in each side piece, E E. Thus by raising or lowering the inner part, B, and adjusting the pin K the frame may be extended or contracted at will.

The top and bottom pieces, 0 H, of frame A are provided with screws M M for securing and holding the frame in position; and the sides E E and G G are each provided in their edges with a series of transverse simicircular or curved recesses. N, for purposes that will be presently described.

0 designates the drill-bearing box, consisting of two plates, P Q, each having a semicircular screw threaded groove, B. These plates are fitted together by means of one or more lugs, S S, on the plate P, which enter openings or apertures T1 in the plate Q, and by one or more uprights, U U, on the former plate, provided with openings U, in which a wedge or securing'key, V, may be inserted, as shown. The screw-threaded portion V of the drill W works in the opening R of the box 0. It is turned or operated by a crank, X, provided with a longitudinal slot, Y, by which it is inserted over the end of the bar V, and adjusted on the sameto lengthen or shorten the crank movement. The crank is secured firmly against a shoulder, Z, on the bar V by a thumb-screw, A.

To the under side of box 0 is secured a transverse bar or shaft, B, the ends of which, when the box is secured in position between the inner sides, E E, of the extensible frame, are adjusted in the recesses or bearings N in the edge of the sides of the frame. By this means the position of the box may be elevated or lowered, asdesired, and by turningit on the shaft B in its bearings N the drill may be directed to any desired angle, as shown in dotted lines, Fig. 2, of the drawings.

The herein-described construction of the extensible frame is of superior utility and convenience, and its adjustment can be quickly and easily effected.

The operation and advantages of my invention are obvious. The drill-box possesses many advantages over hinged boxes of like character, and when it becomes worn or loose the plates may readily be separated and filed down to reduce the size of the drill-openings. It will then hold the drill as tight as before, thus obviatingthe trouble and expense of procuring a new box.

I claim and desire to secure by Letters Patent 1. The herein-described extensible frame, comprising the parts B O, havingend crosspieces, D H, respectively, to which are secured transversely-perforated side pieces, E E and G G,'having semicircular or curved recesses N in their edges, the sides E E of the smaller part fitting between the sides of the larger part 0, and provided with collars F, sliding on the sides Gr G, the latter being provided with a connecting band or collar, I, at their upper end, and the transverse adjusting pin or bolt K, in combination with the drilling mechanism comprising the boxing adjustable in said frame and carrying the drill, as set for h.

2. The herein-described drill-box, comprising the plates P Q,the former being provided with one or more lugs, S S, adapted to enter openings or apertures 'i T in the latter, and with oneor more uprights, UU, provided with openings in which a wedge or securing-key, V, may be inserted to hold the plates together, in combination with the extensible frame and carrying the drill, as set forth.

3. The herein-described improved drillinginachine, consisting of the extensible frame A,

the parts B O of which have the end crosspieces, D H, provided with the transverselypert'orated sides E E and G G, having respectively collars F and band or collar 1, and adjusting pin or bolt K, the drill-box O, comprising the plates P Q, having respectively lugs S S and uprights U U, provided with openings U for the reception of a wedge or seecuring-key, V, and openings orapertures T T, and the screw-threaded drill W, having the adjustable crank X and set-screw A, substantially as herein shown and specified.

In testimonythat I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

MICHAEL LALLY.

Witnesses:

J No. GORMAN, BENNET B. WARNER. 

